Pool season · California
Elk Grove Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
This is the one-page view of Elk Grove's pool year: both model windows, the estimated water-temperature curve, and today's live position on the season bar. The detailed checklists live on the opening and closing guides; this page is the calendar you check between them.
Elk Grove, CA — 152 swim days a yearEach dot on the bar is one week of Elk Grove's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (April 3–April 24), solid teal is swim season, and hollow amber is the closing window ending November 5. The black marker is today — its position against the colors is the entire executive summary.
The Elk Grove pool calendar
Opening — target April 10
Target April 10; the practical window runs April 3–April 24, and the 7-day mean crosses the 61°F threshold around April 24. Cold-water starts are the cheap ones.
Closing — deadline November 5
Hold the cover until October 26, then winterize by November 5, a week ahead of the December 2 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
This is Elk Grove's typical-year water curve: the same EWMA model as the live widget, run on the 1991–2020 normals instead of this week's weather.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 47° | 49° | 54° | 57° | 63° | 70° | 75° | 76° | 74° | 69° | 59° | 50° |
The curve peaks near 76°F — comfortable-water months here usually involve a heater or a solar cover.
Every station tells its own story: compare this curve with El Paso de Robles's pool season and Escondido's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the California season index.
Elk Grove pool season FAQ
When should I open my pool in Elk Grove, CA?
Target April 10. That date backs off two weeks from the day Elk Grove's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Elk Grove opening guide.
When should I close my pool in Elk Grove?
The closing deadline is November 5 — late enough that the water has cooled out of the algae zone, early enough to beat Elk Grove's first-freeze normal by about a week. See the Elk Grove closing guide for the winterizing steps.
How long is the swim season in Elk Grove?
Elk Grove averages 152 days a year with normal highs of 80°F or better — about 9 days later than the California median. The California season index ranks all 147 covered cities by the same metric.
How warm does pool water get in Elk Grove?
An unheated pool near Elk Grove typically peaks around 76°F in high summer and bottoms out near 47°F in winter, never quite reaching the 78°F comfort line without a heater or solar cover. The month-by-month curve above shows the whole cycle; the methodology page explains the ±5°F error bars.
Email me when Elk Grove hits the closing window
Data: NOAA 1991–2020 climate normals via Sacramento Executive Airport (8.7 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.